Water-gage.



G. J. HATZ.

WATER GAGE.

APPLIUATION FILED JULY 15,1912.

Patented Jan. 21, 1913.

2 SHEETS-SHEET 1.

M @aww G. J. HATZ.

WATER GAGE.

APPLICATION FILED JULY 15,1912.

Patented Jan. 21, 1913.

2 SHEETS-SHEET 2.

i 'UNITED STATES 'PATENT ernten.

GEORGE J-HATZ. ,or mvrAHA; NEBRASKA, AssIGNoR er ONE-HALF To CHARLES n FULLER, or' OMAHA, NEBRASKA.

,WATER-GAGE.

g/,can'eriu i n I, !thatf'l, GEORGE J. HA'rz, `offlief'United States, residing at n" county of Douglas and State rliavelin'vente'd certain new and 'e'iiieiis in Water-Gages, of ire the following to be a v A"description, reference mpanying drawings, specification. en n has relation to that indre especially adaptngY the height. of water i 'i andthe object of the ide" `a simple, strong, nfs'truction of Water ldanger of leakage y y tls in the 'features of l A einel described, illustrated in acco "ipa'nying1",l drawings and partic- Y ted'outi peeiication.

nginy invention.' F ig. 2 is aview al'vertical section. F ig. 3 is la view section on. Ilinfi 'of Fig. '2. Fig. i v"'sl ingavinodified form of Vtedlin Figs`1, 2 and'3. ir'ntf elevation showing app'li'fl'il to a duplex water ,"vie'ii" llentral longitudirng ine 'f Fig. y 5 fiafll ,etal frame of my imeferbly a casting formed id lthe `column of water. l ,end ofthis 'casing 1 l v,ther,eiritl'i a plain nipple or p't'ed tbe inserted in the aelg ng gland onthe boiler,

while vthe"opposite 'eiid of the casing is formed with a slagrt threaded nipple 4 to which is connected abgrresponding threaded 5 coupling 5, the intiiri'e'd flange' G'of which coupling engages the outwardly anged end of an extension 7. A gasket S is inserted between the extension 7 and the nipple 4. The extension 7 may be of any required length, so that the gage can be readily connected up, regardless of the exact location of the Fittings.

The casing 1 is formed with a surrounding wall 10 forming a chamber to receive a sight glass 11. The interior dimensions of this Vv,Specicaten of Letters Patent.

' ff 4App1i ,-at m eledauiy 15, 1912. serial No; 709,558.

,the claims at the end` ugh jig.' 5, Fig 7 is a view Patented Jan. 21,1913.

I chamber are materially greater Athan the corresponding dimensions of the sight glass l1, so that when the parts are assembled, there will be a space between the edges of the glass and the surrounding Wall l ot the chamber to receive the packing 12.

The sight glass 11 is held in position by a cover or frame 14 through which pass screws 15 that enter threaded Aseatsformed in the surrounding wall 1() of the casing. The cover or frame 14 extends inwardly ,over the chamber of thewcasing 1to a slight dist-ance beyond the edge'of the'vsight 'glass 11. A compression gland 16, preferably formed integral with the cover extends 'into the space between the'edges of thesightglass v11 and the' surrounding wall 10, so tli'atas the cover is fastened in Aplace by the screws l5, the compression gland'lb will cornpress'the packing 12 and forma Water yand sight glass and the surrounding Wall v 10 of the casing. Preferably, a cushion strip 17 is interposed'between the inner faoeof the sight glass 11 and the inner wall 18 of the casing, and preferably also, a similar cushion strip 19 is interposed between y"the outer face of th'sight glass 11 andthe `cover 14. Inasinuch, however, as the steam and Awater sight glass 11 and the surroiinding lwall 10, it is notI essential that either the cushion strip 17 or: thev cushion strip y19 should be employed. I deem the' use of .these strips desirable, however, simply to avoid Adirect contact` between the glass 'and the metal of 'thc casing. In Fig. 4 of the drawings, .I have shown a construction in which one of the cushion strips, as 19 is omitted, and it will be funderstood that even when "such strips are omitted, the lateralexpansion of curely in place. The space lbetween the edges of the sight glass 11 andthe surroundthe gland 16 serving to insure an effective compression of the packing or stuffing 12 around the edges of Vthe glass.

By my present invention, the clamping of the inner and outerfaces of the sight glass is avoided and in practice, this is a most advantageous feature, since by such means, the danger of breakage of the glass .will be very materially lessened.

tight joint is eiiected by the@ompressionV of the packing 12 between theledgesnof the the packing 12 will hold the sight glass se-v steam tight joint between the edges of the in-g Wall l0 forms, in effect, a stuffing box,-

In Figs. 5,6 and 7 of the drawings I have shown my invention as applied lto a duplex water gage,-that is to say, a gage in which the height of a column of water may be observed from opposite sides of the gage. As, for example, by the engineer on one side of a locomotive cab and the fireman upon the opposite side. In this form of the invention, the casing or frame la has a central, inwardly projecting wall 1b extending around the interior of the casing, this wall havin opposite faces 18*3L and having surrounding walls 10a `projectingoutwardly from the faces 18a and forming chambers to receive the sight glasses 11a. The dimensions of these sight glasses l1a are less than thel interior dimensions ofv the chambers formed by the surrounding walls 10, so that spaces are formed for the packing 12a,

vupon opposite sides of the central wall 1*. In this form of the invention, as in the form of the invention illustrated upon Sheet l of the drawings, each of the covers 14 is attached to the body of the casing by screws 15, and the inner face of each `oi-the covers 14a is shown as -formed with a compression gland or strip 16a adapted to bear upon the packing 12EL and compress it tightly within the space between the edges of the sight glasses and the surrounding walls of the casing. j.

It will be observed that in. both forms of the invention above described, packing will be placed around the edges of the sight glasses in. suficient quantity so that even when the cover is .tightly drawn to place by its retaining screws, there will still be a space between the inner face of the cover and the surroundin wall of the casing, so that if any leakage s ould develo ,the acking may be further compressed y tig tening up thescrews.

The advantages of my present invention will be readily appreciated by those familiar' lwith this class of devices and it will be understood also that the details of the invention -may be varied without departure therefrom.

So far as I am aware my invention presents the iirst instance of afwater gage in which the sight glass is held withinthe frame or casing with a packing between the edges of the glass and the surroundingx wall of the casing, a gland being providedA for compressing the packing between the outer edge of the glass and the surroundin wall of the casing or frame and plainly, t e form and arrangement of the gland whereby the compression of the packing is effected, may be widely varied without departure from the spirit of the invention.

I claim as my invention 1. A water gage comprising a casin having a chamber to receive the sight g ass, a sight'glass within said chamber, said chamber being provided with a wall extending' around said sight glass at a distance therefrom to form a space for packing and having an inner wall extending from said surrounding wall across said packing space and inwardly beyond the edge of said sight glass, packing interposed between the edges of the sight glass and said surrounding wall of the chamber, a retaining cover arranged to extend over said surrounding wall and a ross the edge of the sight glass, said cover being provided with a compression gland adapted to enter the space between the'sight 'glass and said surrounding wall, the compression of the packing being resisted by s aid inner'wall, and -means `for connecting said cover to the casing.

2. A water gage comprising a casin havipg a chamber to receive the sight g ass, a sight glass within said chamber, said chamber being provided with afwall extending around said sight glass at a distance therefrom to form a space for packing and having an inner wall extending from said surrounding wall across said packing space and inwardly beyond the edge of said` sight glass, packing interposed between the edges 'of the sight 'glass and said surrounding wall 'of the chamber, a cushion strip interposed .between the inner face of the sight glass andv said inner wal1,'a retaining cover. ar'- ranged to extend over said surrounding wall ,and across the edge' of the sight glass, said cover being rovided with a com ression gland adapte to enter the space etween the sight glass andsaid surrounding wall, the compression of the packing being resisted by said inner wall, and means for conneet-ing said cover to the casing. y GEORGE J. HATZL Witnesses:

CORNELIUS J (CAREY, v JAMES T. BARRETT. 

